巷道底臌机理的研究

底臌一直是煤矿软岩巷道支护中难以解决的问题之一，但迄今为止人们对巷道底臌的机理尚无统一的认识。只有正确认识了底臌的机理才能建立反映实际的力学模型进行有效的数值计算。在大量现场研究、实验室模型试验和数值计算的基础上，全面讨论了煤矿巷道的底臌特征及其机理，分析了影响底臌的主要因素，为在不同的矿山地质条件下采取有效的防治巷道底臌的措施和进行正确的力学数值计算提供了依据。

INVESTIGATION OF MECHANISM OF FLOOR HEAVE OF ROADWAY

Floor heave is one of the difficult problems to be solved in support of roadway in soft rocks. So far, there is no unified knowledge on the mechanism of floor heave. Only when mechanism of floor heave is correctly understood can a mechanic model representing the actual state be established, and then effective numerical calculation can be performed. Based on field investigation,model tests and numerical calculations, this paper fully discussed the features and mechanism of floor heave of roadway in coal mines and analyzed the major factors affecting the floor heave. The research has provided a basis for taking effective measures to control floor heave under different geological conditions of mine and conducting correct mechanic and numerical calculations.